Space opera
Space opera is a subgenre of science fiction that emphasizes space warfare, melodramatic adventure, interplanetary battles, as well as chivalric romance, and often risk-taking. Set mainly or entirely in outer space, it usually involves conflict between opponents possessing advanced abilities, futuristic weapons, and other sophisticated technology. The term space opera began to be recognized only in the early 1990s as a legitimate genre of science fiction. Hartwell and Cramer define space opera as "colorful, dramatic, large-scale science fiction adventure, competently and sometimes beautifully written, usually focused on a sympathetic, heroic central character and plot action, and usually set in the relatively distant future, and in space or on other worlds, characteristically optimistic in tone. It often deals with war, piracy, military virtues, and very large-scale action, large stakes."